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ChatGPT maker OpenAI has a free tool that can spot AI

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简介Image: Getty ImagesChatGPT maker OpenAI has released a "classifier" tool that can detect AI-written ...

Image: Getty Images

ChatGPT maker OpenAI has released a "classifier" tool that can detect AI-written text, but notes it shouldn't be relied on.

The breadth of prompts ChatGPT can create answers for has alarmed educators as some students begin handing in AI-generated essays and homework as their own work.

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Education is one field that could benefit from OpenAI's new classifier by automating the detection of AI-generated essays and homework. It might allow a different response than say, restricting its use as New York Schools did recently. School departments across Australia have banned ChatGPT too.

The classifier could also help companies like developer Q&A site, Stack Overflow, which banned ChatGPT answers after its moderators were flooded with sometimes-correct solutions.

While the classifier can eliminate some detection work, OpenAI says it's impossible to reliably detect all AI-written text and there are a number of limitations that impact its effectiveness.

The classifier correctly identifies 26% of AI-written text as "likely AI-written" -- its true positive rate. It incorrectly identifies human-written text as AI-written 9% of the time -- its false positive. In other words, there is a reasonably high chance it will fail to detect text submitted by a human who doesn't disclose it was written by AI and some chance it will mislabel text both ways. But it claims the classifier is "significantly more reliable on text from more recent AI systems" than its previous detector based on GPT-2.